Finding the Fourth Proportional to 127,201.20, 190,801.80 and 74,713.20
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Solution
The fourth proportional to 127,201.20, 190,801.80 and 74,713.20 is: 112,069.80
Step by Step Solution
- Step 1: Write the proportion equation
127,201.20 : 190,801.80 = 74,713.20 : x - Step 2: Convert to fraction form
127,201.20/190,801.80 = 74,713.20/x - Step 3: Cross multiply
127,201.20x = 190,801.80 × 74,713.20 - Step 4: Simplify right side
127,201.20x = 14,255,413,043.76 - Step 5: Solve for x
x = 14,255,413,043.76/127,201.20 - Step 6: Final answer
x = 112,069.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.